Answer:
increasing extension time
Explanation:
The Polymerase Chain Reaction is a technique widely used in molecular biology laboratories to amplify target DNA regions. The standard steps of a PCR are as follow 1-denaturation, 2-annealing and 3-elongation/extension. These steps are repeated 15-40 times in order to exponentially amplify the linear DNA fragment. It is well known that longer extension times can be used as a strategy to increase the yield of longer PCR products. This is because the extension time depends on the synthesis rate of the DNA polymerase used in PCR technique and the length of the DNA fragment to be amplified.
The mantle is made of a solid rocky substance.
Answer:
maybe something like:
1. what caused their extinction primarily
2. why could they not survive through the situation they were in
3. how do we know what specific event occurred using only the resources we have today
Explanation:
I hope this gave you a bit of insight :))!
Im going to say O2..but im not 100% sure
